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Chelmsford Amateur Radio Society Anthony Martin M1FDE 1U Xrouter Project

Chelmsford Amateur Radio Society Anthony Martin M1FDE 1U Xrouter Project. 1U Xrouter. Summary 8 Port TNC/Router 4 modems Ethernet No fans or hard disk 1U Rack case. Geography. Mast. 30 ft. Shack Workshop. 80 ft. Home Network. Packet Network. Internet Dialup. WLAN Access Point.

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Chelmsford Amateur Radio Society Anthony Martin M1FDE 1U Xrouter Project

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  1. Chelmsford Amateur Radio Society Anthony Martin M1FDE1U Xrouter Project

  2. 1U Xrouter Summary • 8 Port TNC/Router • 4 modems • Ethernet • No fans or hard disk • 1U Rack case

  3. Geography Mast 30 ft Shack Workshop 80 ft

  4. Home Network Packet Network Internet Dialup WLAN Access Point Radio Linux Server WindowsPC Packet Router 100Mb/s LAN

  5. Packet Router requirements • Remote operation via LAN • Always On • Low power • Low noise • Reliability • Like a big TNC • Xrouter software available • Arkwright’s till board available • Capacity for future experiments Packet Router

  6. Power & reset switches FDD drive - useful for test CF card slot – system software and config System status – PSU, HDD, LAN 8 Channels Tx and Rx status Front panel

  7. 80386SX CPU 4M RAM FDD, IDE HDD COM1, LPT1, KBD CGA video 8x SCC Ports! Power input 20W Runs DOS, Linux Arkwright’s board

  8. Compact Flash • Bootable IDE disk • Very fast • Low power • Removable • Easy to load software • Easy to backup disk images • Backup on Windows using “Gemulator Explorer”

  9. CF-IDE adaptor • Suppliers: • TAPR • linitx.com

  10. Power Supply • Modified standard 180W AT • Select for small transformer • Replace the heatsinks • Swop any other high parts • Check adequate cooling • Safety - mains on heatsinks

  11. Standard PC NIC 10Mbit/s 400kb/s FTP 10baseT Cat 5 cable Connection via ribbon cable to AT bus Network card

  12. Internal modems for 4 ports Basic 1200 Baud FSK TCM3105 modem chips Modem board

  13. Xrouter Software • Author Paula Dowie G8PZT • many network protocols • many interfaces • very configurable • low CPU resources • Running on FreeDOS • Running with XFS186 (PC-NFS clone)

  14. more reverse engineering sketch schematics available connector & register map document available Arkwrights’ Revenge

  15. Schematic sketches available

  16. Register maps available

  17. Hardware nearly all tested Router works on air Connect over LAN via telnet from Winpack Final modem tests to be done Test G8PZT’s support for Arkwright SCCs Control of RC748 transceivers Project Status

  18. More ideas • 1GHz PC • Smaller than a TNC • Fit CF-card drive • Run Win95+AGWPE • or run Linux • Dual port TNC? • Below £300 • linitx.com

  19. Future projects • Low cost RF circuits for Tinytrak • High rate RF modems • lowest cost vs. programmable architecture • RF out, KISS-in (Ethernet in? or PCI card?) • 23 cms? (All bands?) • Server applications scripting; new kinds of services • Operating; time permitting!

  20. http://www.g8pzt.pwp.blueyonder.co.uk/ http://www.tvipug.org/arkwright/arkindex.html http://linitx.com/ Anthony Martin M1FDE http://homepage.ntlworld.com/mtn/ mailto://m1fde@g0mwt.org.uk/ http://www.g0mwt.org.uk/ M1FDE Contacts and links

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